<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    h1{
      color: red;
      color: #ff0000;
      color: #00ff00;
      color: rgb(255,0,0);
      color: rgba(255,0,0,.5);

    }
    #d1{
      background-color: lightskyblue;
      width:200px;
      height: 200px;
      background-image: url("../b.jpg");
      background-size: 100px 100px;
      /*禁止重复*/
      background-position: 100px,0;
      /*控制背景图片位置 横向 纵向*/
      background-position: 50%,50%;
    }
    #d2{
      width: 611px;
      height: 376px;
      background-color:#e8e8e8 ;
      background-image: url("http://doc.canglaoshi.org/tstore_v1/images/itemCat/study_computer_img1.png");
      background-size: 318px,319px;
      /*禁止重复*/
      background-repeat: no-repeat;
      /*控制背景图片位置 横向 纵向*/
      background-position: 90%,80%;
    }
  </style>
</head>
<body>
<div id="d1"></div>
<div id="d2"></div>
<h1>颜色测试</h1>
</body>
</html>